FreeBSD/Linux Kernel Cross Reference
sys/uvm/uvm_swap.h

     /*      $NetBSD: uvm_swap.h,v 1.14 2005/12/11 12:25:29 christos Exp $   */
     
     /*
      * Copyright (c) 1997 Matthew R. Green
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
     */
    
    #ifndef _UVM_UVM_SWAP_H_
    #define _UVM_UVM_SWAP_H_
    
    #define SWSLOT_BAD      (-1)
    
    #ifdef _KERNEL
    #if defined(_KERNEL_OPT)
    #include "opt_vmswap.h"
    #endif
    
    struct swapent;
    
    #if defined(VMSWAP)
    int     uvm_swap_get(struct vm_page *, int, int);
    int     uvm_swap_put(int, struct vm_page **, int, int);
    int     uvm_swap_alloc(int *, boolean_t);
    void    uvm_swap_free(int, int);
    void    uvm_swap_markbad(int, int);
    boolean_t       uvm_swapisfull(void);
    #else /* defined(VMSWAP) */
    #define uvm_swapisfull()        TRUE
    #endif /* defined(VMSWAP) */
    void    uvm_swap_stats(int, struct swapent *, int, register_t *);
    
    #endif /* _KERNEL */
    
    #endif /* _UVM_UVM_SWAP_H_ */

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